Taxonomic Remarks
Thorson et al. (1983b) document the reproductive maturity for males at 32 to 34 cm DW, and at 35 to 45 cm DW for females, which can carry up to 11 fetuses per gestation. Delimitation of type-series of Potamotrygon circularis follows Hartel & Dingerkus (1997). Additional references: Thorson et al. (1983a), Compagno & Cook (1995), Ferreira et al. (1998).
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系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
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营养阶层 (参考文献 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
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回复力 (参考文献 120179) |
非常低的, 最小族群倍增时间超过14 年 (Assuming Fec<10). |
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渔业脆弱性 (Ref. 59153) |
Moderate to high vulnerability (49 of 100). 🛈 |
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价格分类 (Ref. 80766) |
Medium. |